Samsung Dishwasher (East dulwich SE22)

Samsung Dishwasher with internal light The machine works intermittently; I called a handyman, and he said the pump wasn't working. I bought a replacement pump from ebay for £45 and had it installed, but it still showed the same error code; I was told that a component on the side panel needed replacing. Otherwise, it was a great machine—if anyone is interested or knows what to do, it could easily be repaired. Collections ASAP.